In his first-ever interview, the sole Australian survivor of the Waco siege has revealed to 60 Minutes what really took place during the 51-day stand-off, and why he believes crazed cult leader David Koresh will one day return to Earth as the son of God.

Fears for bushfire season after grass blaze in Sydney

Dozens of firefighters have contained a grass fire that came dangerously close to a drug treatment centre and a car yard in Sydney’s south-west.

Crews were called to the large blaze on Stennett Road in Ingleburn just before 4pm.

About 30 people were evacuated from the Odyssey House drug treatment centre, located on Campbelltown Road, as flames were propelled by strong north-westerly winds through hectares of tinder-dry ground.

Up to 150 brand-new vehicles at AutoCare car yard on Stennett Road were also risk, Fire and Rescue NSW (FRNSW) said.

The fire threatened the car yard and the Odyssey House building. (9NEWS)Numerous fire crews are at the scene. (9NEWS)

The fire was controlled about 5pm, and crews spent the following two hours mopping up.

People evacuated from Odyssey House have since been told they can safely return to the facility.

The grass fire comes amid a very dry August for Sydney, with the city’s gauges receiving just over 23 millimetres in rain so far this month, and raises fears for the upcoming bushfire season.